Page 2 Section 7
Troubleshooting
MSD SABER SERIES SHEARS
CUTTING PERFORMANCE TROUBLESHOOTING GUIDE
The information contained in this guide provides for troubleshooting the LaBounty shear only. Any references
to the excavator will be made only to give some guidance as to where a problem may exist. Any specifi c main-
tenance and troubleshooting information will need to be provided by the Original Equipment Manufacturer of
the excavator or the authorized dealer. If a question arises regarding the operation or maintenance of the shear,
contact your LaBounty dealer for the proper instruction.
SYMPTOM
PROBABLE CAUSE
REMEDY
1. Upper shear jaw will not
move
a. No hydraulic fl uid to shear
cylinder
b. Broken hydraulic swivel
c. Shear is jammed
i. Check hydraulic fl ow at hydraulic manifold block on
shear.
ii. Check excavator hydraulic circuit.
i. Replace swivel and fl ush hydraulic circuit (if rotator).
i. Consult the LaBounty Customer Serice department for
instructions.
2. Cutting speed is ex-
tremely slow
a. Excavator oil supply (fl ow) is too
low
b. Hydraulic cylinder seal bypass
c. Hydraulic lines are kinked
d. Hydraulic swivel seal bypass
i. Check fl ow to shear and compare with recommended
fl ow (see hydraulic letter).
ii. Check for excessive back pressure.
iii. Check excavator hydraulic system.
i. Check for cylinder seal bypass; replace seals if neces-
sary.
i. Check hydraulic lines; replace any damaged lines.
i. Check for seal bypass (consult your dealer service
department for instructions). Install new seal kit if neces-
sary.
3. Jaws move too rapidly
a. Hydraulic fl ow to attachment is
excessively high
i. Reduce fl ow to the attachment.
NOTE
The attachment may be damaged if fl ow exceeds the
recommended GPM.
4. Upper shear jaw drifts
a. Excavator hydraulic valve open
or closed is open center type
b. Excavator control valve is faulty
c. Hydraulic cylinder seal bypass
d. Hydraulic swivel bypass (if rota-
tor)
i. Check hydraulic circuit to verify. Replace with closed
center spool type.
i. Refer to excavator maintenance manual for correct
procedures.
- check for sticky spool
- check for circuit relief valve bypass
- check for spool seal bypass
i. Check for seal bypass; replace seals if necessary.
i. Check swivel for bypass; replace seals if necessary.
Содержание MSD 1000
Страница 1: ...MSD Saber Series Shears Part Number 512141 Safety Operation Maintenance Manual...
Страница 6: ...TABLE OF CONTENTS...
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Страница 30: ...Page 10 Section 3 Installation MSD SABER SERIES SHEARS...
Страница 38: ...Page 8 Section 4 Operation MSD SABER SERIES SHEARS...
Страница 117: ...512141 ver 6 2012 The STANLEY and LABOUNTY names and logos are registered trademarks of Stanley Infrastructure Solutions...